All enclaves in the world have limited sovereignty, as a result of dependence on a neighboring country that is much stronger. However, in order to gain full independence, small states are often being established on different islands.
Unfortunately, no-man's-land is hard to find nowadays, thus we need to buy it. Few significant states on the Caribbean islands are now safe-heavens for many rich of the world. However, we want to own an island to set our rules.